Take-up mechanism for looms



No; 575,297. Patented Jan. 12,1897.-

UNITED STATES PATENT OFFICE.

EDWARD WV. DAVENPORT, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO THE NORTHROP LOOM COMPANY, OF SACO, MAINE.

TAKE-UP MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent N 575,297, dated January 12, 1897. Application filed August 1,1896. Serial No. 601,325. (No modelfi To all whom it may concern:

Be it known that LEDWARD W. DAVEN- PORT, of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Take-Up Mechanism for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object the production of novel and effective take-up mechanism for looms wherein the said mechanism is operated at each pick of the loom.

Means are provided for controlling the actuating-pawl and detent to let off the take-up upon failure of the filling, the said means being of simple and novel construction and operation.

Various features of my invention will be hereinafter described in the specification and particularly pointed out in the claims.

Figure l is a transverse sectional view of a sufficient portion of a loom to be understood, taken at the take-up side of the loom, with my invention applied thereto. Fig. 2 is a perspective detail of the detent, and Fig. 3 is a similar view of the detent support or holder.

The main frame A of the loom, the lay A, lay-supporting arms A one of which is shown j ournaled at A breast-beam A, the ratchetwheel B of the take-up mechanism, mounted on the stud B and the train of gears intermediate said ratchet-wheel B and the takeup roll B are and may be of any usual or well-known construction.

Upon the stud B I have mounted the pawl-carrier, (shown as a lever (6,) having a downwardly-slotted bearing a to embrace the stud and an elongated slot a at its inner end to be entered by a lug or projection CLX on the lay-sword A as herein shown. The other end of the pawl-carrier is upturned at a and has rigidly secured to or forming a part of it the actuating-pawl a adapted to engage the teeth of the ratchet-wheel B and rotate the same step by step from right to left, the takeup operating at each pick,'producing a more even face in the cloth than can be had with a take-up acting at every other pick. The slot a and bearing a permit the pawl a to be disengaged from the ratchet-wheel when it is desired to permit retrograde movement of the latter, as will be described.

As shown separately in Fig. 2, the detent Z) is sharpened or beveled at b to engage the teeth of the ratchet, with downturned cars l) to embrace the sides of the ratchet-wheel and prevent lateral displacement of the detent, the upper end of the latter being slotted, as at 17 one of the sides of the slot having trans verse serrations or teeth I)".

The detent is pivotally mounted on a support or holder d, (see Fig. 3,) slotted at c1 to receive a bolt (Z by which it is adjustably attached to the loom side, as shown in Fig. l, the bottom of the support being turned out to form a foot d having inclined cheeks (1 As best shown in Fig. 1, the foot is sharpened along its inner edge (1 to engage the serrated side of the slot 12 of the detent, the foot extending through said slot, while the cheeks d maintain the detent from lateral movement, the said detent being fulcrumed on the sharpened edge of the foot d A setscrew 6 provided with a suitable check-nut b is threaded into the upper end of the detent to limit the downward movement of the detent, the inner end of the screw normally resting on the foot.

The stop-motion rock-shaft 61, extended across from one to the other side of the loom, has fast thereon an arm 0 joined by a link 0 to a lever c", pivoted at c and adapted to be acted upon by the weft-fork slide, as in United States Patent No. 529,943, to which reference may be had.

When the upper end of lever c is swung out by the weft-fork, due to failure of the filling, the lower end of the lever is swung inward and raised, thereby moving a depending controlling-rod 0 Fig. 1, pivoted at 0 on the lever, and provided at its lower end with a lug or projection a, bearing against the outer side of the detent b, and an offset portion 0 which latter extends beneath the bent end of an extension or link a shown as adjustably secured to end a of the pawl-carrier a by a bolt a. This lifting of the con trolling-rod e disengages the actuating-pawl a from the ratchet-wheel B, and at the same time the lug e pushes 011 the under side of the detent b to disengage its serrations b from the foot (1 thereby allowing the retrograde motion of the wheel 13 to push the detent up. When the lever returns to normal position, the rod 0 is lowered into position shown in Fig. 1, the pawl a", pawl-carrier, and detent Z; returning to operative position.

By means of the set-screw b the positionof the detent is regulated on the support or holder d, and the latter is adjusted by bolt d As the lay moves forward the actuatingpawl is moved to take a new hold on the ratchet-wheel, and on the back stroke of the lay the take-up mechanism is operated.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. I11 a loonr, the lay, take-u p mechanism, including a ratchet-wheel, an actuating-pawl therefor, a pawl-carrier on which the pawl is rigidly mounted, and having a slotted bearing, a fixed fulcrum for said bearing, connections between the lay and pawl-carrier, to operate the latter, and means to lift the pawlcarrier to thereby disengage the pawl from the ratchet-wheel, substantially as described.

2. In a loom, the lay, take-up mechanism, including a ratchet-wheel, a lever having a slotted bearing pivoted on the support of the ratchet-wheel, said lever having a pawl at one end to move the ratchet-wheel, and a slot at the other end, engaged by a stud or pin on the lay-sword, to thereby positively swing the lever on each stroke of the lay, and means to lift the slotted bearing of the lever from its fulcrum, to thereby disengage the pawl from the ratchet-wheel, substantially as described.

3. In a loom, the lay, take-up mechanism, including a ratchet-wheel, its actuating-pawl, and connections between it and the lay, to rotate said wheel step by step, combined with a slotted detent for the ratchet-wheel, one side of said slot being serrated, a support for the detent, having a foot to enter the slot and engage the serrated side thereof, an adjustable stop to limit the downward movement of the detent, and means to move the detent laterally to thereby disengage the foot from the serrations, whereby the detent may move longitudinally to permit retrogression of the ratchet-wheel, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDIVARD W. DAVENPORT.

IVit-nesses:

GEO. OTIS DRAPER, II. F. SEARLES. 

